Adjustable support for chairs.



N0. 805,846. PATENTED NOV 28, 1905.

J. FLINDALL. ADJUSTABLE SUPPORT FOR CHAIRS.

APPLICATION FILED FEB. 18. 1904.

I fizz/672697 x/vwm a fzta JOHN FLINDALL, OF CHICAGO, ILLINOIS.

ADJUSTABLE SUPPORT FOR CHAIRS.

Specification of Letters Patent.

Patented Nov. 28, 1905.

Application filed February 18, 1904. Serial No. 194,219.

T0 at whom it may concern:

Be it known that I, JOHN FLINDALL, a citizen of the United States,residing at Chicago, county of Cook, State of Illinois, haveinvented acertain new and useful Improvementin Adjustable Supports for Chairs; andI declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itpertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

My invention has for its object the production of an adjustable supportfor a chair or other seat. In the drawings I have shown it as applied toa rocking-chair; but it it obvious that it can be applied to any otherform of chair without departing from the spirit of the invention.

In the drawings, Figure 1 is a side elevation of my chair; Fig. 2, asectional view on the line 2 2 of Fig. 1, and Fig. 3 a sectional view onthe line 3 3 of Fig. 1.

In carrying out the invention, A represents the seat or other supportfor the chair. Engaged to the bottom thereof are what may be termedchannel-irons, shaped to provide a horizontal groove a.

B is an iron having extensions 6, which enter the channel a and slidetherein.

6 represents ears depending from the piece B, one set at each end of thepiece, and between those of each setis pivoted the end 0 of one of thesupports C, the pivot being the rod D.

Engaged to the back of the seat A are depending ears E, in which the endf of the support F is pivoted, the two supports being pivoted togetherat f. Engaged to the back portion of the seat A is a piece Gr,preferably, although not necessarily, made of spring metal at g, so thatthe outer free end can be tilted. Of course the tilting movement may beobtained in other ways without departing from the spirit of theinvention; but I prefer to make the piece G of spring metal, as abovedescribed. The free end of each piece G is provided with teeth g to forma rack, the two pieces G having their rack-teeth engaging the rod D andengaged together by the rod G, which also forms a handle to lift the tworacks simultaneously.

H represents the rocker on one side of the chair, although this insteadof being curved might also be any other suitable. form. Engaged to theend of the support H is a piece H, having a curved end it. The lower endcross-piece K. Engaged to the rocker H in any suitable manner is a stripL. The crosspiece K has depending lugs 7r, containing horizontalrecesses which engage over the projecting edge of the strip L, so thatthe sup port C has a sliding engagement with the rocker H.

The operation will be readily understood. The operator grasps the rod Gand lifts the rack-bar, so that the teeth clear the rod D, when thechair can be adjusted to any height desired, and then the racks aredropped onto the rod, and this looks the chair at the desired elevation.It is of course obvious that in raising the chair the rack-bars need notbe touched by the operator, since the beveled faces of the teeth willenable them to slide over the rod D.

It is obvious that the supporting-pieces C and F may be made ofanydesired shape; but I prefer to turn the lower portion of the body ofeach piece at right angle to itself, so that there will be formed thespring portions C and F. It is also obvious, of course, that the manydetails of construction can be changed or altered without departing fromthe spirit of the invention. I

What I claim is 1. In a rocking-chair, the combination with a seat, of apair of rockers, an adjustable support interposed between each side ofsaid seat and one of said rockers comprising a pair of members pivotallyunited, means for securing the lower end of one member of each pair to arocker, means for pivotally securing the upper end of said member to theseat, means for securing the lower end of the second member of each pairin sliding engagement with the rocker, means for positively securing theupper end of said second member of each pair in sliding engagement withthe seat, and a yielding rack-bar secured to the seat for retaining theupper end of the second member of each pair in the desired adjustedposition.

2. In a chair or the like, the combination with the base thereof and asuitable support or supports to rest on the floor, of an adjustablesupport between the two comprising two sets of members, each setconsisting of two members pivoted together in the form of a letter X,the lower end of one member hav- IQ teeth on the rack-bars dependingdownwardly and adapted to engage the connecting-rod between the twosupporting members and means for holding said connected upper ends insliding engagement with the base.

In testimony whereof I sign this specifica- 5 tion in the presence oftwo witnesses.

JOHN FLINDALL. itnesses:

Geo. L. WILKINSON, CLARA (J. CUNNINGHAM.

